Improvement in coal-oil lamps



A.4 WINTERBURN.

COAL-OIL LAMP.

"Patented June-19,1877A .o L a AWM Sla

A"UlvIT-nnVSrn'rns PATENT DFFIGE.

" ANDREW WINTERBURN, OF ALBANY, NEW YORK.

" IMPROVEMENT IN coAL-'olLL-AMPS.

Specification forming part of Letters Patent No. 192,210, dated June 19,1877 application filed March 15,1877.

To all whom it mag/'concern Be it known that I, ANDREW WINTERBURN, ofthe city and county of Albany, State of New York, have invented a newand useful Improvement in Goal-Oil Lamps, which improvement is fully setforth in the following cap in place, and Fig. 5 represents aperspectiveview of a lampwith the improvey ment applied.

Theobject of my invention is to provide, in a coal-oil lamp, a device bywhich the wick raising and lowering mechanism may be stopped andresisted from further movement to carry the wick below a `given point inthe wicktube when the said mechanism is being operated to move the wickdownward below the upper end of the said wick-tube, and thereby preventthe operator from accidentally or otherwise turning the wick down pastthe raising-wheel.

In the drawings, A is the lamp. B is .the wick-tube. a ci are thewick-raising wheels. b is the shaft by which the said wheels are operlated. C is the thumb-wheel for operating the shaft. D is the burner-cap;all of which are old and well known.

To the shaft b I secure a pinion, c, which pinion may be actuated at thesame time the raising-wheels a a are operated.

Secured to the wick-tube B, as in Figs. l and 2, or to the base orflange of the cap D, is the spring-bracket c, which bracket may bereadily crowded or pressed back to dotted lines e in Fig. 3. The saidbracket holds the vertical stop-bar d by means of feathers n o made withthe said bracket, and working in ways a: .fr made in the sides of thestop-bar, as shown in Fig. 3.

The stop-bar d has made on its side opposite the pinion c a series ofcogs or rack-teeth, made to correspond with the cogs in said pinion, soas to be capable of being engaged with by the said pinion and raised orlowered when the said pinion is turned. When the thumb-wheel C is turnedin direction indicated by arrow l in Figs. 2 and 3, the wickraisin gwheels a a will be revolved in the same direction, and raise the wicksup from dotted lines fw to full lines w, Fig.V l; and when turned in anopposite direction, as indicated by arrow2 in Figs. 2 and 3, the saidwickraising wheels will operate in a reverse manner to carry the wicksdown from full lines w to dotted lines w in Fig. 1, when the flame willbe extinguished. At the same time the wheels a a are operating' with thewick to carry the same down the pinion c, on the same shaft with wheelsa a, will operate with the teeth on the stop-bar, and carry it downuntil its lower end rests on the body of the lamp or other equivalentportion of the same capable of resisting a further movement of the saidbar in a downward direction. The moment the said lower end of the bartouches the surface on which it may rest the bar is made to operate withthe pinion c to arrest any further movement of the same, while at thesame time the wick-raising wheels secured to the shaft l will also bearrested in their operation with the wick, and thereby be prevented frombeing moved so as to carry the said wick down below a point ofengagement with said wheels.

It may be readily seen that b v this invention the wick cannot, by thecarelessness of the operator, be turned down below the wickraisingwheels, as the stop-bar, when arrested, will indicate to the operatorthat the shaft carrying the wick-raisin g wheels has been suflicientlyrevolved to carry the wick down to a distance sufficient to extinguishthe llame. It may also be readily seen that, as the stop-bar issupported by the elastic or spring bracket e, the said stop-bar may beat anytime moved out from contact with pinion c, so as to permit-theshaft b and wick-raising wheels a a to be revolved any extent desired ornecessary to permit the insertion of a wick or the proper adjustment ofthe same in relation to its height in the tube; and that when the wickhas been properlyv adjusted the spring-bracket, when relieved, willcarry the said stop-bar back from dotted lines to fu'll lines in Fig. 3,so as to be again in engagement With the pinion o, as before.

Havingdescribed my inventiomWhntI claim, and desire to secure by LettersPatent, is-

1. The combination, with a lamp-burner hnving a wick raising andlowering device, of the stop-bar d, operated by pinion c, secured to theshaft carrying the wick-raising wheels, and adapted to arrest themovement of the said shaft when the same is revolved in a direction tolower the wicks, substantially as and for the purpose set forth. v

v 2. The combination, with the lamp-burner and a stop-bar, d, adapted tobe moved sim11l taneously with the feeding mechanism in eitherdirection, of the spring-bracket e, substantially as and for the purposeset forth.

ANDREW WINTERBURN. Witnesses:

JAMES GRAY, WILLIAM F. SELKIRK.

